Question

which term of d AP 5,2-1,..... is -49?

Answer 1

hi.........

a0 = 5

a1 = a0 + d = 2

a1 =  5 +d = 2

d= -3

ax = -49

x =?

ax = a0 + (x-1) d = -49

5 + (x- 1) (-3) = -49

-3x + 3 = -54

-3x = -57

x =19

-49 is the 19th term

hope this helps.....................